1 |
greg |
2.1 |
#ifndef lint |
2 |
schorsch |
2.22 |
static const char RCSid[] = "$Id: rad2mgf.c,v 2.21 2003/10/27 10:26:45 schorsch Exp $"; |
3 |
greg |
2.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* Convert Radiance scene description to MGF |
6 |
|
|
*/ |
7 |
|
|
|
8 |
greg |
2.20 |
#include "platform.h" |
9 |
gwlarson |
2.14 |
#include "standard.h" |
10 |
greg |
2.12 |
#include <ctype.h> |
11 |
greg |
2.1 |
#include <string.h> |
12 |
schorsch |
2.17 |
#include <stdio.h> |
13 |
|
|
|
14 |
schorsch |
2.21 |
#include "rtprocess.h" |
15 |
greg |
2.1 |
#include "object.h" |
16 |
|
|
#include "color.h" |
17 |
|
|
#include "lookup.h" |
18 |
|
|
|
19 |
greg |
2.10 |
#define C_1SIDEDTHICK 0.005 |
20 |
|
|
|
21 |
greg |
2.1 |
|
22 |
|
|
LUTAB rmats = LU_SINIT(free,NULL); /* defined material table */ |
23 |
|
|
|
24 |
|
|
LUTAB rdispatch = LU_SINIT(NULL,NULL); /* function dispatch table */ |
25 |
|
|
|
26 |
greg |
2.2 |
char curmat[80]; /* current material */ |
27 |
|
|
char curobj[128] = "Untitled"; /* current object name */ |
28 |
greg |
2.1 |
|
29 |
greg |
2.2 |
double unit_mult = 1.; /* units multiplier */ |
30 |
greg |
2.1 |
|
31 |
greg |
2.2 |
#define hasmult (unit_mult < .999 || unit_mult > 1.001) |
32 |
greg |
2.1 |
|
33 |
greg |
2.4 |
/* |
34 |
|
|
* Stuff for tracking and reusing vertices: |
35 |
|
|
*/ |
36 |
greg |
2.2 |
|
37 |
greg |
2.9 |
char VKFMT[] = "%+16.9e %+16.9e %+16.9e"; |
38 |
greg |
2.4 |
#define VKLEN 64 |
39 |
|
|
|
40 |
|
|
#define mkvkey(k,v) sprintf(k, VKFMT, (v)[0], (v)[1], (v)[2]) |
41 |
|
|
|
42 |
|
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#define NVERTS 256 |
43 |
|
|
|
44 |
greg |
2.8 |
long vclock; /* incremented at each vertex request */ |
45 |
greg |
2.4 |
|
46 |
|
|
struct vert { |
47 |
|
|
long lused; /* when last used (0 if unassigned) */ |
48 |
|
|
FVECT p; /* track point position only */ |
49 |
|
|
} vert[NVERTS]; /* our vertex cache */ |
50 |
|
|
|
51 |
|
|
LUTAB vertab = LU_SINIT(free,NULL); /* our vertex lookup table */ |
52 |
|
|
|
53 |
schorsch |
2.22 |
static void rad2mgf(char *inp); |
54 |
|
|
static void cvtprim(char *inp, char *mod, char *typ, char *id, FUNARGS *fa); |
55 |
|
|
static void newmat(char *id, char *alias); |
56 |
|
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static void setmat(char *id); |
57 |
|
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static void setobj(char *id); |
58 |
|
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static void init(void); |
59 |
|
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static void uninit(void); |
60 |
|
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static void clrverts(void); |
61 |
|
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static void add2dispatch(char *name, int (*func)()); |
62 |
|
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static char *getvertid(char *vname, FVECT vp); |
63 |
|
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static int o_unsupported(char *mod, char *typ, char *id, FUNARGS *fa); |
64 |
|
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static int o_face(char *mod, char *typ, char *id, FUNARGS *fa); |
65 |
|
|
static int o_cone(char *mod, char *typ, char *id, FUNARGS *fa); |
66 |
|
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static int o_sphere(char *mod, char *typ, char *id, FUNARGS *fa); |
67 |
|
|
static int o_cylinder(char *mod, char *typ, char *id, FUNARGS *fa); |
68 |
|
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static int o_ring(char *mod, char *typ, char *id, FUNARGS *fa); |
69 |
|
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static int o_instance(char *mod, char *typ, char *id, FUNARGS *fa); |
70 |
|
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static int o_illum(char *mod, char *typ, char *id, FUNARGS *fa); |
71 |
|
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static int o_plastic(char *mod, char *typ, char *id, FUNARGS *fa); |
72 |
|
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static int o_metal(char *mod, char *typ, char *id, FUNARGS *fa); |
73 |
|
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static int o_glass(char *mod, char *typ, char *id, FUNARGS *fa); |
74 |
|
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static int o_dielectric(char *mod, char *typ, char *id, FUNARGS *fa); |
75 |
|
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static int o_mirror(char *mod, char *typ, char *id, FUNARGS *fa); |
76 |
|
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static int o_trans(char *mod, char *typ, char *id, FUNARGS *fa); |
77 |
|
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static int o_light(char *mod, char *typ, char *id, FUNARGS *fa); |
78 |
greg |
2.4 |
|
79 |
schorsch |
2.22 |
|
80 |
|
|
int |
81 |
|
|
main( |
82 |
|
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int argc, |
83 |
|
|
char **argv |
84 |
|
|
) |
85 |
greg |
2.1 |
{ |
86 |
|
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int i; |
87 |
|
|
|
88 |
|
|
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
89 |
|
|
switch (argv[i][1]) { |
90 |
|
|
case 'd': /* units */ |
91 |
|
|
switch (argv[i][2]) { |
92 |
|
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case 'm': /* meters */ |
93 |
|
|
unit_mult = 1.; |
94 |
|
|
break; |
95 |
|
|
case 'c': /* centimeters */ |
96 |
|
|
unit_mult = .01; |
97 |
|
|
break; |
98 |
|
|
case 'f': /* feet */ |
99 |
|
|
unit_mult = 12.*.0254; |
100 |
|
|
break; |
101 |
|
|
case 'i': /* inches */ |
102 |
|
|
unit_mult = .0254; |
103 |
|
|
break; |
104 |
|
|
default: |
105 |
|
|
goto unkopt; |
106 |
|
|
} |
107 |
|
|
break; |
108 |
greg |
2.6 |
default: |
109 |
|
|
goto unkopt; |
110 |
greg |
2.1 |
} |
111 |
|
|
init(); |
112 |
|
|
if (i >= argc) |
113 |
|
|
rad2mgf(NULL); |
114 |
|
|
else |
115 |
|
|
for ( ; i < argc; i++) |
116 |
|
|
rad2mgf(argv[i]); |
117 |
|
|
uninit(); |
118 |
|
|
exit(0); |
119 |
|
|
unkopt: |
120 |
|
|
fprintf(stderr, "Usage: %s [-d{m|c|f|i}] file ..\n", argv[0]); |
121 |
|
|
exit(1); |
122 |
|
|
} |
123 |
|
|
|
124 |
|
|
|
125 |
schorsch |
2.22 |
void |
126 |
|
|
rad2mgf( /* convert a Radiance file to MGF */ |
127 |
|
|
char *inp |
128 |
|
|
) |
129 |
greg |
2.1 |
{ |
130 |
|
|
#define mod buf |
131 |
|
|
#define typ (buf+128) |
132 |
|
|
#define id (buf+256) |
133 |
|
|
#define alias (buf+384) |
134 |
|
|
char buf[512]; |
135 |
|
|
FUNARGS fa; |
136 |
|
|
register FILE *fp; |
137 |
|
|
register int c; |
138 |
|
|
|
139 |
|
|
if (inp == NULL) { |
140 |
greg |
2.2 |
inp = "standard input"; |
141 |
greg |
2.1 |
fp = stdin; |
142 |
|
|
} else if (inp[0] == '!') { |
143 |
|
|
if ((fp = popen(inp+1, "r")) == NULL) { |
144 |
|
|
fputs(inp, stderr); |
145 |
|
|
fputs(": cannot execute\n", stderr); |
146 |
|
|
exit(1); |
147 |
|
|
} |
148 |
|
|
} else if ((fp = fopen(inp, "r")) == NULL) { |
149 |
|
|
fputs(inp, stderr); |
150 |
|
|
fputs(": cannot open\n", stderr); |
151 |
|
|
exit(1); |
152 |
|
|
} |
153 |
|
|
printf("# Begin conversion from: %s\n", inp); |
154 |
|
|
while ((c = getc(fp)) != EOF) |
155 |
|
|
switch (c) { |
156 |
|
|
case ' ': /* white space */ |
157 |
|
|
case '\t': |
158 |
|
|
case '\n': |
159 |
|
|
case '\r': |
160 |
|
|
case '\f': |
161 |
|
|
break; |
162 |
|
|
case '#': /* comment */ |
163 |
|
|
if (fgets(buf, sizeof(buf), fp) != NULL) |
164 |
|
|
printf("# %s", buf); |
165 |
|
|
break; |
166 |
|
|
case '!': /* inline command */ |
167 |
|
|
ungetc(c, fp); |
168 |
|
|
fgetline(buf, sizeof(buf), fp); |
169 |
|
|
rad2mgf(buf); |
170 |
|
|
break; |
171 |
|
|
default: /* Radiance primitive */ |
172 |
|
|
ungetc(c, fp); |
173 |
|
|
if (fscanf(fp, "%s %s %s", mod, typ, id) != 3) { |
174 |
|
|
fputs(inp, stderr); |
175 |
|
|
fputs(": unexpected EOF\n", stderr); |
176 |
|
|
exit(1); |
177 |
|
|
} |
178 |
|
|
if (!strcmp(typ, "alias")) { |
179 |
|
|
strcpy(alias, "EOF"); |
180 |
|
|
fscanf(fp, "%s", alias); |
181 |
|
|
newmat(id, alias); |
182 |
|
|
} else { |
183 |
|
|
if (!readfargs(&fa, fp)) { |
184 |
|
|
fprintf(stderr, |
185 |
|
|
"%s: bad argument syntax for %s \"%s\"\n", |
186 |
|
|
inp, typ, id); |
187 |
|
|
exit(1); |
188 |
|
|
} |
189 |
|
|
cvtprim(inp, mod, typ, id, &fa); |
190 |
|
|
freefargs(&fa); |
191 |
|
|
} |
192 |
|
|
break; |
193 |
|
|
} |
194 |
|
|
printf("# End conversion from: %s\n", inp); |
195 |
|
|
if (inp[0] == '!') |
196 |
|
|
pclose(fp); |
197 |
|
|
else |
198 |
|
|
fclose(fp); |
199 |
|
|
#undef mod |
200 |
|
|
#undef typ |
201 |
|
|
#undef id |
202 |
|
|
#undef alias |
203 |
|
|
} |
204 |
|
|
|
205 |
|
|
|
206 |
schorsch |
2.22 |
void |
207 |
|
|
cvtprim( /* process Radiance primitive */ |
208 |
|
|
char *inp, |
209 |
|
|
char *mod, |
210 |
|
|
char *typ, |
211 |
|
|
char *id, |
212 |
|
|
FUNARGS *fa |
213 |
|
|
) |
214 |
greg |
2.1 |
{ |
215 |
|
|
int (*df)(); |
216 |
|
|
|
217 |
|
|
df = (int (*)())lu_find(&rdispatch, typ)->data; |
218 |
|
|
if (df != NULL) { /* convert */ |
219 |
|
|
if ((*df)(mod, typ, id, fa) < 0) { |
220 |
schorsch |
2.22 |
fprintf(stderr, "%s: bad %s \"%s\"\n", "rat2mgf", typ, id); |
221 |
greg |
2.1 |
exit(1); |
222 |
|
|
} |
223 |
greg |
2.11 |
} else { /* unsupported */ |
224 |
|
|
o_unsupported(mod, typ, id, fa); |
225 |
|
|
if (lu_find(&rmats, mod)->data != NULL) /* make alias */ |
226 |
|
|
newmat(id, mod); |
227 |
|
|
} |
228 |
greg |
2.1 |
} |
229 |
|
|
|
230 |
|
|
|
231 |
schorsch |
2.22 |
void |
232 |
|
|
newmat( /* add a modifier to the alias list */ |
233 |
|
|
char *id, |
234 |
|
|
char *alias |
235 |
|
|
) |
236 |
greg |
2.1 |
{ |
237 |
|
|
register LUENT *lp, *lpa; |
238 |
|
|
|
239 |
|
|
if (alias != NULL) { /* look up alias */ |
240 |
|
|
if ((lpa = lu_find(&rmats, alias)) == NULL) |
241 |
|
|
goto memerr; |
242 |
|
|
if (lpa->data == NULL) |
243 |
|
|
alias = NULL; /* doesn't exist! */ |
244 |
|
|
} |
245 |
|
|
if ((lp = lu_find(&rmats, id)) == NULL) /* look up material */ |
246 |
|
|
goto memerr; |
247 |
|
|
if (alias != NULL && lp->data == lpa->key) |
248 |
|
|
return; /* alias set already */ |
249 |
|
|
if (lp->data == NULL) { /* allocate material */ |
250 |
|
|
if ((lp->key = (char *)malloc(strlen(id)+1)) == NULL) |
251 |
|
|
goto memerr; |
252 |
|
|
strcpy(lp->key, id); |
253 |
|
|
} |
254 |
|
|
if (alias == NULL) { /* set this material */ |
255 |
|
|
lp->data = lp->key; |
256 |
|
|
printf("m %s =\n", id); |
257 |
|
|
} else { /* set this alias */ |
258 |
|
|
lp->data = lpa->key; |
259 |
|
|
printf("m %s = %s\n", id, alias); |
260 |
|
|
} |
261 |
|
|
strcpy(curmat, id); |
262 |
|
|
return; |
263 |
|
|
memerr: |
264 |
|
|
fputs("Out of memory in newmat!\n", stderr); |
265 |
|
|
exit(1); |
266 |
|
|
} |
267 |
|
|
|
268 |
|
|
|
269 |
schorsch |
2.22 |
void |
270 |
|
|
setmat( /* set material to this one */ |
271 |
|
|
char *id |
272 |
|
|
) |
273 |
greg |
2.1 |
{ |
274 |
|
|
if (!strcmp(id, curmat)) /* already set? */ |
275 |
|
|
return; |
276 |
greg |
2.2 |
if (!strcmp(id, VOIDID)) /* cannot set */ |
277 |
|
|
return; |
278 |
greg |
2.1 |
printf("m %s\n", id); |
279 |
|
|
strcpy(curmat, id); |
280 |
|
|
} |
281 |
|
|
|
282 |
|
|
|
283 |
schorsch |
2.22 |
void |
284 |
|
|
setobj( /* set object name to this one */ |
285 |
|
|
char *id |
286 |
|
|
) |
287 |
greg |
2.2 |
{ |
288 |
|
|
register char *cp, *cp2; |
289 |
|
|
char *end = NULL; |
290 |
|
|
int diff = 0; |
291 |
|
|
/* use all but final suffix */ |
292 |
|
|
for (cp = id; *cp; cp++) |
293 |
|
|
if (*cp == '.') |
294 |
|
|
end = cp; |
295 |
|
|
if (end == NULL) |
296 |
|
|
end = cp; |
297 |
|
|
/* copy to current object */ |
298 |
greg |
2.12 |
cp2 = curobj; |
299 |
|
|
if (!isalpha(*id)) { /* start with letter */ |
300 |
|
|
diff = *cp2 != 'O'; |
301 |
|
|
*cp2++ = 'O'; |
302 |
|
|
} |
303 |
|
|
for (cp = id; cp < end; *cp2++ = *cp++) { |
304 |
schorsch |
2.18 |
if ((*cp < '!') | (*cp > '~')) /* limit to visible chars */ |
305 |
greg |
2.12 |
*cp = '?'; |
306 |
greg |
2.2 |
diff += *cp != *cp2; |
307 |
greg |
2.12 |
} |
308 |
greg |
2.2 |
if (!diff && !*cp2) |
309 |
|
|
return; |
310 |
|
|
*cp2 = '\0'; |
311 |
|
|
fputs("o\no ", stdout); |
312 |
|
|
puts(curobj); |
313 |
|
|
} |
314 |
|
|
|
315 |
|
|
|
316 |
schorsch |
2.22 |
void |
317 |
|
|
init(void) /* initialize dispatch table and output */ |
318 |
greg |
2.1 |
{ |
319 |
greg |
2.4 |
lu_init(&vertab, NVERTS); |
320 |
greg |
2.1 |
lu_init(&rdispatch, 22); |
321 |
|
|
add2dispatch("polygon", o_face); |
322 |
|
|
add2dispatch("cone", o_cone); |
323 |
|
|
add2dispatch("cup", o_cone); |
324 |
|
|
add2dispatch("sphere", o_sphere); |
325 |
|
|
add2dispatch("bubble", o_sphere); |
326 |
|
|
add2dispatch("cylinder", o_cylinder); |
327 |
|
|
add2dispatch("tube", o_cylinder); |
328 |
|
|
add2dispatch("ring", o_ring); |
329 |
|
|
add2dispatch("instance", o_instance); |
330 |
greg |
2.19 |
add2dispatch("mesh", o_instance); |
331 |
greg |
2.1 |
add2dispatch("plastic", o_plastic); |
332 |
|
|
add2dispatch("plastic2", o_plastic); |
333 |
|
|
add2dispatch("metal", o_metal); |
334 |
|
|
add2dispatch("metal2", o_metal); |
335 |
|
|
add2dispatch("glass", o_glass); |
336 |
greg |
2.10 |
add2dispatch("dielectric", o_dielectric); |
337 |
greg |
2.1 |
add2dispatch("trans", o_trans); |
338 |
|
|
add2dispatch("trans2", o_trans); |
339 |
|
|
add2dispatch("mirror", o_mirror); |
340 |
|
|
add2dispatch("light", o_light); |
341 |
|
|
add2dispatch("spotlight", o_light); |
342 |
|
|
add2dispatch("glow", o_light); |
343 |
|
|
add2dispatch("illum", o_illum); |
344 |
greg |
2.11 |
puts("# The following was converted from RADIANCE scene input"); |
345 |
greg |
2.2 |
if (hasmult) |
346 |
greg |
2.1 |
printf("xf -s %.4e\n", unit_mult); |
347 |
greg |
2.2 |
printf("o %s\n", curobj); |
348 |
greg |
2.1 |
} |
349 |
|
|
|
350 |
|
|
|
351 |
schorsch |
2.22 |
void |
352 |
|
|
uninit(void) /* mark end of MGF file */ |
353 |
greg |
2.1 |
{ |
354 |
greg |
2.2 |
puts("o"); |
355 |
|
|
if (hasmult) |
356 |
greg |
2.1 |
puts("xf"); |
357 |
greg |
2.11 |
puts("# End of data converted from RADIANCE scene input"); |
358 |
greg |
2.1 |
lu_done(&rdispatch); |
359 |
|
|
lu_done(&rmats); |
360 |
greg |
2.4 |
lu_done(&vertab); |
361 |
greg |
2.1 |
} |
362 |
|
|
|
363 |
|
|
|
364 |
schorsch |
2.22 |
void |
365 |
|
|
clrverts(void) /* clear vertex table */ |
366 |
greg |
2.5 |
{ |
367 |
|
|
register int i; |
368 |
|
|
|
369 |
|
|
lu_done(&vertab); |
370 |
|
|
for (i = 0; i < NVERTS; i++) |
371 |
|
|
vert[i].lused = 0; |
372 |
|
|
lu_init(&vertab, NVERTS); |
373 |
|
|
} |
374 |
|
|
|
375 |
|
|
|
376 |
schorsch |
2.22 |
void |
377 |
|
|
add2dispatch( /* add function to dispatch table */ |
378 |
|
|
char *name, |
379 |
|
|
int (*func)() |
380 |
|
|
) |
381 |
greg |
2.1 |
{ |
382 |
|
|
register LUENT *lp; |
383 |
|
|
|
384 |
|
|
lp = lu_find(&rdispatch, name); |
385 |
|
|
if (lp->key != NULL) { |
386 |
|
|
fputs(name, stderr); |
387 |
|
|
fputs(": duplicate dispatch entry!\n", stderr); |
388 |
|
|
exit(1); |
389 |
|
|
} |
390 |
|
|
lp->key = name; |
391 |
|
|
lp->data = (char *)func; |
392 |
|
|
} |
393 |
|
|
|
394 |
|
|
|
395 |
|
|
char * |
396 |
schorsch |
2.22 |
getvertid( /* get/set vertex ID for this point */ |
397 |
|
|
char *vname, |
398 |
|
|
FVECT vp |
399 |
|
|
) |
400 |
greg |
2.1 |
{ |
401 |
greg |
2.9 |
static char vkey[VKLEN]; |
402 |
greg |
2.1 |
register LUENT *lp; |
403 |
|
|
register int i, vndx; |
404 |
|
|
|
405 |
greg |
2.8 |
vclock++; /* increment counter */ |
406 |
greg |
2.1 |
mkvkey(vkey, vp); |
407 |
|
|
if ((lp = lu_find(&vertab, vkey)) == NULL) |
408 |
|
|
goto memerr; |
409 |
|
|
if (lp->data == NULL) { /* allocate new vertex entry */ |
410 |
|
|
if (lp->key != NULL) /* reclaim deleted entry */ |
411 |
|
|
vertab.ndel--; |
412 |
|
|
else { |
413 |
|
|
if ((lp->key = (char *)malloc(VKLEN)) == NULL) |
414 |
|
|
goto memerr; |
415 |
|
|
strcpy(lp->key, vkey); |
416 |
|
|
} |
417 |
|
|
vndx = 0; /* find oldest vertex */ |
418 |
|
|
for (i = 1; i < NVERTS; i++) |
419 |
|
|
if (vert[i].lused < vert[vndx].lused) |
420 |
|
|
vndx = i; |
421 |
|
|
if (vert[vndx].lused) { /* free old entry first */ |
422 |
|
|
mkvkey(vkey, vert[vndx].p); |
423 |
|
|
lu_delete(&vertab, vkey); |
424 |
|
|
} |
425 |
greg |
2.3 |
VCOPY(vert[vndx].p, vp); /* assign it */ |
426 |
greg |
2.2 |
printf("v v%d =\n\tp %.15g %.15g %.15g\n", /* print it */ |
427 |
greg |
2.1 |
vndx, vp[0], vp[1], vp[2]); |
428 |
|
|
lp->data = (char *)&vert[vndx]; /* set it */ |
429 |
|
|
} else |
430 |
|
|
vndx = (struct vert *)lp->data - vert; |
431 |
greg |
2.8 |
vert[vndx].lused = vclock; /* record this use */ |
432 |
greg |
2.1 |
sprintf(vname, "v%d", vndx); |
433 |
|
|
return(vname); |
434 |
|
|
memerr: |
435 |
|
|
fputs("Out of memory in getvertid!\n", stderr); |
436 |
|
|
exit(1); |
437 |
|
|
} |
438 |
|
|
|
439 |
|
|
|
440 |
|
|
int |
441 |
schorsch |
2.22 |
o_unsupported( /* mark unsupported primitive */ |
442 |
|
|
char *mod, |
443 |
|
|
char *typ, |
444 |
|
|
char *id, |
445 |
|
|
FUNARGS *fa |
446 |
|
|
) |
447 |
greg |
2.11 |
{ |
448 |
|
|
register int i; |
449 |
|
|
|
450 |
|
|
fputs("\n# Unsupported RADIANCE primitive:\n", stdout); |
451 |
|
|
printf("# %s %s %s", mod, typ, id); |
452 |
|
|
printf("\n# %d", fa->nsargs); |
453 |
|
|
for (i = 0; i < fa->nsargs; i++) |
454 |
|
|
printf(" %s", fa->sarg[i]); |
455 |
|
|
#ifdef IARGS |
456 |
|
|
printf("\n# %d", fa->niargs); |
457 |
|
|
for (i = 0; i < fa->niargs; i++) |
458 |
|
|
printf(" %ld", fa->iarg[i]); |
459 |
|
|
#else |
460 |
|
|
fputs("\n# 0", stdout); |
461 |
|
|
#endif |
462 |
|
|
printf("\n# %d", fa->nfargs); |
463 |
|
|
for (i = 0; i < fa->nfargs; i++) |
464 |
|
|
printf(" %g", fa->farg[i]); |
465 |
|
|
fputs("\n\n", stdout); |
466 |
|
|
return(0); |
467 |
|
|
} |
468 |
|
|
|
469 |
|
|
|
470 |
|
|
int |
471 |
schorsch |
2.22 |
o_face( /* print out a polygon */ |
472 |
|
|
char *mod, |
473 |
|
|
char *typ, |
474 |
|
|
char *id, |
475 |
|
|
FUNARGS *fa |
476 |
|
|
) |
477 |
greg |
2.1 |
{ |
478 |
gwlarson |
2.15 |
char entbuf[2048], *linestart; |
479 |
greg |
2.2 |
register char *cp; |
480 |
greg |
2.1 |
register int i; |
481 |
|
|
|
482 |
schorsch |
2.18 |
if ((fa->nfargs < 9) | (fa->nfargs % 3)) |
483 |
greg |
2.1 |
return(-1); |
484 |
|
|
setmat(mod); |
485 |
greg |
2.2 |
setobj(id); |
486 |
gwlarson |
2.15 |
cp = linestart = entbuf; |
487 |
greg |
2.2 |
*cp++ = 'f'; |
488 |
greg |
2.1 |
for (i = 0; i < fa->nfargs; i += 3) { |
489 |
greg |
2.2 |
*cp++ = ' '; |
490 |
gwlarson |
2.15 |
if (cp - linestart > 72) { |
491 |
|
|
*cp++ = '\\'; *cp++ = '\n'; |
492 |
|
|
linestart = cp; |
493 |
|
|
*cp++ = ' '; *cp++ = ' '; |
494 |
|
|
} |
495 |
greg |
2.2 |
getvertid(cp, fa->farg + i); |
496 |
|
|
while (*cp) |
497 |
|
|
cp++; |
498 |
greg |
2.1 |
} |
499 |
|
|
puts(entbuf); |
500 |
|
|
return(0); |
501 |
|
|
} |
502 |
|
|
|
503 |
|
|
|
504 |
|
|
int |
505 |
schorsch |
2.22 |
o_cone( /* print out a cone */ |
506 |
|
|
char *mod, |
507 |
|
|
char *typ, |
508 |
|
|
char *id, |
509 |
|
|
register FUNARGS *fa |
510 |
|
|
) |
511 |
greg |
2.1 |
{ |
512 |
greg |
2.2 |
char v1[6], v2[6]; |
513 |
|
|
|
514 |
greg |
2.1 |
if (fa->nfargs != 8) |
515 |
|
|
return(-1); |
516 |
|
|
setmat(mod); |
517 |
greg |
2.2 |
setobj(id); |
518 |
|
|
getvertid(v1, fa->farg); |
519 |
|
|
getvertid(v2, fa->farg + 3); |
520 |
greg |
2.1 |
if (typ[1] == 'u') /* cup -> inverted cone */ |
521 |
greg |
2.2 |
printf("cone %s %.12g %s %.12g\n", |
522 |
|
|
v1, -fa->farg[6], v2, -fa->farg[7]); |
523 |
greg |
2.1 |
else |
524 |
greg |
2.2 |
printf("cone %s %.12g %s %.12g\n", |
525 |
|
|
v1, fa->farg[6], v2, fa->farg[7]); |
526 |
greg |
2.1 |
return(0); |
527 |
|
|
} |
528 |
|
|
|
529 |
|
|
|
530 |
|
|
int |
531 |
schorsch |
2.22 |
o_sphere( /* print out a sphere */ |
532 |
|
|
char *mod, |
533 |
|
|
char *typ, |
534 |
|
|
char *id, |
535 |
|
|
register FUNARGS *fa |
536 |
|
|
) |
537 |
greg |
2.1 |
{ |
538 |
greg |
2.2 |
char cent[6]; |
539 |
|
|
|
540 |
greg |
2.1 |
if (fa->nfargs != 4) |
541 |
|
|
return(-1); |
542 |
|
|
setmat(mod); |
543 |
greg |
2.2 |
setobj(id); |
544 |
|
|
printf("sph %s %.12g\n", getvertid(cent, fa->farg), |
545 |
|
|
typ[0]=='b' ? -fa->farg[3] : fa->farg[3]); |
546 |
greg |
2.1 |
return(0); |
547 |
|
|
} |
548 |
|
|
|
549 |
|
|
|
550 |
|
|
int |
551 |
schorsch |
2.22 |
o_cylinder( /* print out a cylinder */ |
552 |
|
|
char *mod, |
553 |
|
|
char *typ, |
554 |
|
|
char *id, |
555 |
|
|
register FUNARGS *fa |
556 |
|
|
) |
557 |
greg |
2.1 |
{ |
558 |
greg |
2.2 |
char v1[6], v2[6]; |
559 |
|
|
|
560 |
greg |
2.1 |
if (fa->nfargs != 7) |
561 |
|
|
return(-1); |
562 |
|
|
setmat(mod); |
563 |
greg |
2.2 |
setobj(id); |
564 |
|
|
getvertid(v1, fa->farg); |
565 |
|
|
getvertid(v2, fa->farg + 3); |
566 |
|
|
printf("cyl %s %.12g %s\n", v1, |
567 |
|
|
typ[0]=='t' ? -fa->farg[6] : fa->farg[6], v2); |
568 |
greg |
2.1 |
return(0); |
569 |
|
|
} |
570 |
|
|
|
571 |
|
|
|
572 |
|
|
int |
573 |
schorsch |
2.22 |
o_ring( /* print out a ring */ |
574 |
|
|
char *mod, |
575 |
|
|
char *typ, |
576 |
|
|
char *id, |
577 |
|
|
register FUNARGS *fa |
578 |
|
|
) |
579 |
greg |
2.1 |
{ |
580 |
|
|
if (fa->nfargs != 8) |
581 |
|
|
return(-1); |
582 |
|
|
setmat(mod); |
583 |
greg |
2.2 |
setobj(id); |
584 |
|
|
printf("v cent =\n\tp %.12g %.12g %.12g\n", |
585 |
greg |
2.1 |
fa->farg[0], fa->farg[1], fa->farg[2]); |
586 |
greg |
2.2 |
printf("\tn %.12g %.12g %.12g\n", |
587 |
greg |
2.1 |
fa->farg[3], fa->farg[4], fa->farg[5]); |
588 |
|
|
if (fa->farg[6] < fa->farg[7]) |
589 |
|
|
printf("ring cent %.12g %.12g\n", |
590 |
|
|
fa->farg[6], fa->farg[7]); |
591 |
|
|
else |
592 |
|
|
printf("ring cent %.12g %.12g\n", |
593 |
|
|
fa->farg[7], fa->farg[6]); |
594 |
|
|
return(0); |
595 |
|
|
} |
596 |
|
|
|
597 |
|
|
|
598 |
|
|
int |
599 |
schorsch |
2.22 |
o_instance( /* convert an instance (or mesh) */ |
600 |
|
|
char *mod, |
601 |
|
|
char *typ, |
602 |
|
|
char *id, |
603 |
|
|
FUNARGS *fa |
604 |
|
|
) |
605 |
greg |
2.1 |
{ |
606 |
greg |
2.2 |
register int i; |
607 |
|
|
register char *cp; |
608 |
|
|
char *start = NULL, *end = NULL; |
609 |
|
|
/* |
610 |
|
|
* We don't really know how to do this, so we just create |
611 |
|
|
* a reference to an undefined MGF file and it's the user's |
612 |
|
|
* responsibility to create this file and put the appropriate |
613 |
|
|
* stuff into it. |
614 |
|
|
*/ |
615 |
|
|
if (fa->nsargs < 1) |
616 |
|
|
return(-1); |
617 |
|
|
setmat(mod); /* only works if surfaces are void */ |
618 |
|
|
setobj(id); |
619 |
|
|
for (cp = fa->sarg[0]; *cp; cp++) /* construct MGF file name */ |
620 |
|
|
if (*cp == '/') |
621 |
|
|
start = cp+1; |
622 |
|
|
else if (*cp == '.') |
623 |
|
|
end = cp; |
624 |
|
|
if (start == NULL) |
625 |
|
|
start = fa->sarg[0]; |
626 |
|
|
if (end == NULL || start >= end) |
627 |
|
|
end = cp; |
628 |
|
|
fputs("i ", stdout); /* print include entity */ |
629 |
|
|
for (cp = start; cp < end; cp++) |
630 |
|
|
putchar(*cp); |
631 |
|
|
fputs(".mgf", stdout); /* add MGF suffix */ |
632 |
|
|
for (i = 1; i < fa->nsargs; i++) { /* add transform */ |
633 |
|
|
putchar(' '); |
634 |
|
|
fputs(fa->sarg[i], stdout); |
635 |
|
|
} |
636 |
|
|
putchar('\n'); |
637 |
greg |
2.5 |
clrverts(); /* vertex id's no longer reliable */ |
638 |
greg |
2.2 |
return(0); |
639 |
greg |
2.1 |
} |
640 |
|
|
|
641 |
|
|
|
642 |
|
|
int |
643 |
schorsch |
2.22 |
o_illum( /* convert an illum material */ |
644 |
|
|
char *mod, |
645 |
|
|
char *typ, |
646 |
|
|
char *id, |
647 |
|
|
FUNARGS *fa |
648 |
|
|
) |
649 |
greg |
2.1 |
{ |
650 |
|
|
if (fa->nsargs == 1 && strcmp(fa->sarg[0], VOIDID)) { |
651 |
|
|
newmat(id, fa->sarg[0]); /* just create alias */ |
652 |
|
|
return(0); |
653 |
|
|
} |
654 |
|
|
/* else create invisible material */ |
655 |
|
|
newmat(id, NULL); |
656 |
greg |
2.2 |
puts("\tts 1 0"); |
657 |
greg |
2.1 |
return(0); |
658 |
|
|
} |
659 |
|
|
|
660 |
|
|
|
661 |
|
|
int |
662 |
schorsch |
2.22 |
o_plastic( /* convert a plastic material */ |
663 |
|
|
char *mod, |
664 |
|
|
char *typ, |
665 |
|
|
char *id, |
666 |
|
|
register FUNARGS *fa |
667 |
|
|
) |
668 |
greg |
2.1 |
{ |
669 |
|
|
COLOR cxyz, rrgb; |
670 |
|
|
double d; |
671 |
|
|
|
672 |
|
|
if (fa->nfargs != (typ[7]=='2' ? 6 : 5)) |
673 |
|
|
return(-1); |
674 |
|
|
newmat(id, NULL); |
675 |
|
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
676 |
|
|
rgb_cie(cxyz, rrgb); |
677 |
greg |
2.2 |
puts("\tc"); /* put diffuse component */ |
678 |
greg |
2.1 |
d = cxyz[0] + cxyz[1] + cxyz[2]; |
679 |
|
|
if (d > FTINY) |
680 |
greg |
2.2 |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
681 |
|
|
printf("\trd %.4f\n", cxyz[1]*(1. - fa->farg[3])); |
682 |
|
|
if (fa->farg[3] > FTINY) { /* put specular component */ |
683 |
|
|
puts("\tc"); |
684 |
|
|
printf("\trs %.4f %.4f\n", fa->farg[3], |
685 |
|
|
typ[7]=='2' ? .5*(fa->farg[4] + fa->farg[5]) : |
686 |
|
|
fa->farg[4]); |
687 |
|
|
} |
688 |
greg |
2.1 |
return(0); |
689 |
|
|
} |
690 |
|
|
|
691 |
|
|
|
692 |
|
|
int |
693 |
schorsch |
2.22 |
o_metal( /* convert a metal material */ |
694 |
|
|
char *mod, |
695 |
|
|
char *typ, |
696 |
|
|
char *id, |
697 |
|
|
register FUNARGS *fa |
698 |
|
|
) |
699 |
greg |
2.1 |
{ |
700 |
|
|
COLOR cxyz, rrgb; |
701 |
|
|
double d; |
702 |
|
|
|
703 |
|
|
if (fa->nfargs != (typ[5]=='2' ? 6 : 5)) |
704 |
|
|
return(-1); |
705 |
|
|
newmat(id, NULL); |
706 |
|
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
707 |
|
|
rgb_cie(cxyz, rrgb); |
708 |
greg |
2.2 |
puts("\tc"); /* put diffuse component */ |
709 |
greg |
2.1 |
d = cxyz[0] + cxyz[1] + cxyz[2]; |
710 |
|
|
if (d > FTINY) |
711 |
greg |
2.2 |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
712 |
|
|
printf("\trd %.4f\n", cxyz[1]*(1. - fa->farg[3])); |
713 |
greg |
2.1 |
/* put specular component */ |
714 |
greg |
2.2 |
printf("\trs %.4f %.4f\n", cxyz[1]*fa->farg[3], |
715 |
greg |
2.1 |
typ[5]=='2' ? .5*(fa->farg[4] + fa->farg[5]) : |
716 |
|
|
fa->farg[4]); |
717 |
|
|
return(0); |
718 |
|
|
} |
719 |
|
|
|
720 |
|
|
|
721 |
|
|
int |
722 |
schorsch |
2.22 |
o_glass( /* convert a glass material */ |
723 |
|
|
char *mod, |
724 |
|
|
char *typ, |
725 |
|
|
char *id, |
726 |
|
|
register FUNARGS *fa |
727 |
|
|
) |
728 |
greg |
2.1 |
{ |
729 |
|
|
COLOR cxyz, rrgb, trgb; |
730 |
|
|
double nrfr = 1.52, F, d; |
731 |
|
|
register int i; |
732 |
|
|
|
733 |
|
|
if (fa->nfargs != 3 && fa->nfargs != 4) |
734 |
|
|
return(-1); |
735 |
|
|
newmat(id, NULL); |
736 |
|
|
if (fa->nfargs == 4) |
737 |
|
|
nrfr = fa->farg[3]; |
738 |
greg |
2.10 |
printf("\tir %f 0\n", nrfr); |
739 |
greg |
2.1 |
F = (1. - nrfr)/(1. + nrfr); /* use normal incidence */ |
740 |
|
|
F *= F; |
741 |
|
|
for (i = 0; i < 3; i++) { |
742 |
greg |
2.2 |
trgb[i] = fa->farg[i] * (1. - F)*(1. - F) / |
743 |
greg |
2.1 |
(1. - F*F*fa->farg[i]*fa->farg[i]); |
744 |
greg |
2.2 |
rrgb[i] = F * (1. + (1. - 2.*F)*fa->farg[i]) / |
745 |
|
|
(1. - F*F*fa->farg[i]*fa->farg[i]); |
746 |
greg |
2.1 |
} |
747 |
|
|
rgb_cie(cxyz, rrgb); /* put reflected component */ |
748 |
greg |
2.2 |
puts("\tc"); |
749 |
greg |
2.1 |
d = cxyz[0] + cxyz[1] + cxyz[2]; |
750 |
|
|
if (d > FTINY) |
751 |
greg |
2.2 |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
752 |
|
|
printf("\trs %.4f 0\n", cxyz[1]); |
753 |
greg |
2.10 |
rgb_cie(cxyz, trgb); /* put transmitted component */ |
754 |
|
|
puts("\tc"); |
755 |
|
|
d = cxyz[0] + cxyz[1] + cxyz[2]; |
756 |
|
|
if (d > FTINY) |
757 |
|
|
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
758 |
|
|
printf("\tts %.4f 0\n", cxyz[1]); |
759 |
|
|
return(0); |
760 |
|
|
} |
761 |
|
|
|
762 |
|
|
|
763 |
|
|
int |
764 |
schorsch |
2.22 |
o_dielectric( /* convert a dielectric material */ |
765 |
|
|
char *mod, |
766 |
|
|
char *typ, |
767 |
|
|
char *id, |
768 |
|
|
register FUNARGS *fa |
769 |
|
|
) |
770 |
greg |
2.10 |
{ |
771 |
|
|
COLOR cxyz, trgb; |
772 |
|
|
double F, d; |
773 |
|
|
register int i; |
774 |
|
|
|
775 |
|
|
if (fa->nfargs != 5) |
776 |
|
|
return(-1); |
777 |
|
|
newmat(id, NULL); |
778 |
|
|
F = (1. - fa->farg[3])/(1. + fa->farg[3]); /* normal incidence */ |
779 |
|
|
F *= F; |
780 |
|
|
for (i = 0; i < 3; i++) |
781 |
|
|
trgb[i] = (1. - F)*pow(fa->farg[i], C_1SIDEDTHICK/unit_mult); |
782 |
|
|
printf("\tir %f 0\n", fa->farg[3]); /* put index of refraction */ |
783 |
|
|
printf("\tsides 1\n"); |
784 |
|
|
puts("\tc"); /* put reflected component */ |
785 |
|
|
printf("\trs %.4f 0\n", F); |
786 |
greg |
2.1 |
rgb_cie(cxyz, trgb); /* put transmitted component */ |
787 |
greg |
2.2 |
puts("\tc"); |
788 |
greg |
2.1 |
d = cxyz[0] + cxyz[1] + cxyz[2]; |
789 |
|
|
if (d > FTINY) |
790 |
greg |
2.2 |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
791 |
|
|
printf("\tts %.4f 0\n", cxyz[1]); |
792 |
greg |
2.1 |
return(0); |
793 |
|
|
} |
794 |
|
|
|
795 |
|
|
|
796 |
|
|
int |
797 |
schorsch |
2.22 |
o_mirror( /* convert a mirror material */ |
798 |
|
|
char *mod, |
799 |
|
|
char *typ, |
800 |
|
|
char *id, |
801 |
|
|
register FUNARGS *fa |
802 |
|
|
) |
803 |
greg |
2.1 |
{ |
804 |
|
|
COLOR cxyz, rrgb; |
805 |
|
|
double d; |
806 |
|
|
|
807 |
|
|
if (fa->nsargs == 1) { /* use alternate material */ |
808 |
|
|
newmat(id, fa->sarg[0]); |
809 |
|
|
return(0); |
810 |
|
|
} |
811 |
|
|
if (fa->nfargs != 3) |
812 |
|
|
return(-1); |
813 |
|
|
newmat(id, NULL); |
814 |
|
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
815 |
|
|
rgb_cie(cxyz, rrgb); |
816 |
greg |
2.2 |
puts("\tc"); /* put specular component */ |
817 |
greg |
2.1 |
d = cxyz[0] + cxyz[1] + cxyz[2]; |
818 |
|
|
if (d > FTINY) |
819 |
greg |
2.2 |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
820 |
|
|
printf("\trs %.4f 0\n", cxyz[1]); |
821 |
greg |
2.1 |
return(0); |
822 |
|
|
} |
823 |
|
|
|
824 |
|
|
|
825 |
|
|
int |
826 |
schorsch |
2.22 |
o_trans( /* convert a trans material */ |
827 |
|
|
char *mod, |
828 |
|
|
char *typ, |
829 |
|
|
char *id, |
830 |
|
|
register FUNARGS *fa |
831 |
|
|
) |
832 |
greg |
2.1 |
{ |
833 |
|
|
COLOR cxyz, rrgb; |
834 |
|
|
double rough, trans, tspec, d; |
835 |
|
|
|
836 |
|
|
if (typ[4] == '2') { /* trans2 */ |
837 |
|
|
if (fa->nfargs != 8) |
838 |
|
|
return(-1); |
839 |
|
|
rough = .5*(fa->farg[4] + fa->farg[5]); |
840 |
|
|
trans = fa->farg[6]; |
841 |
|
|
tspec = fa->farg[7]; |
842 |
|
|
} else { /* trans */ |
843 |
|
|
if (fa->nfargs != 7) |
844 |
|
|
return(-1); |
845 |
|
|
rough = fa->farg[4]; |
846 |
|
|
trans = fa->farg[5]; |
847 |
|
|
tspec = fa->farg[6]; |
848 |
|
|
} |
849 |
|
|
newmat(id, NULL); |
850 |
|
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
851 |
|
|
rgb_cie(cxyz, rrgb); |
852 |
greg |
2.2 |
puts("\tc"); /* put transmitted diffuse */ |
853 |
greg |
2.1 |
d = cxyz[0] + cxyz[1] + cxyz[2]; |
854 |
|
|
if (d > FTINY) |
855 |
greg |
2.2 |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
856 |
|
|
printf("\ttd %.4f\n", cxyz[1]*trans*(1. - fa->farg[3])*(1. - tspec)); |
857 |
greg |
2.1 |
/* put transmitted specular */ |
858 |
greg |
2.2 |
printf("\tts %.4f %.4f\n", cxyz[1]*trans*tspec*(1. - fa->farg[3]), rough); |
859 |
greg |
2.1 |
/* put reflected diffuse */ |
860 |
greg |
2.2 |
printf("\trd %.4f\n", cxyz[1]*(1. - fa->farg[3])*(1. - trans)); |
861 |
|
|
puts("\tc"); /* put reflected specular */ |
862 |
|
|
printf("\trs %.4f %.4f\n", fa->farg[3], rough); |
863 |
greg |
2.1 |
return(0); |
864 |
|
|
} |
865 |
|
|
|
866 |
|
|
|
867 |
|
|
int |
868 |
schorsch |
2.22 |
o_light( /* convert a light type */ |
869 |
|
|
char *mod, |
870 |
|
|
char *typ, |
871 |
|
|
char *id, |
872 |
|
|
register FUNARGS *fa |
873 |
|
|
) |
874 |
greg |
2.1 |
{ |
875 |
|
|
COLOR cxyz, rrgb; |
876 |
|
|
double d; |
877 |
|
|
|
878 |
|
|
if (fa->nfargs < 3) |
879 |
|
|
return(-1); |
880 |
|
|
newmat(id, NULL); |
881 |
|
|
rrgb[0] = fa->farg[0]; rrgb[1] = fa->farg[1]; rrgb[2] = fa->farg[2]; |
882 |
|
|
rgb_cie(cxyz, rrgb); |
883 |
|
|
d = cxyz[0] + cxyz[1] + cxyz[2]; |
884 |
greg |
2.2 |
puts("\tc"); |
885 |
greg |
2.1 |
if (d > FTINY) |
886 |
greg |
2.2 |
printf("\t\tcxy %.4f %.4f\n", cxyz[0]/d, cxyz[1]/d); |
887 |
greg |
2.7 |
printf("\ted %.4g\n", cxyz[1]*(PI*WHTEFFICACY)); |
888 |
greg |
2.1 |
return(0); |
889 |
|
|
} |